In the given figure \[\angle AOC=(2x-5){}^\circ \] and \[\angle BOC=(3x+10){}^\circ \]. Find the value of x

• A. \[40{}^\circ \]                          
• B. \[30{}^\circ \]
• C. \[35{}^\circ \]  
• D. \[19{}^\circ \]
• E. None of these